Nut-lock.



'No. 858,191. PATENTED JUNE 25, 1907, '4

A. J. LOGAN.

NUT LOCK. APPLICATION rug JURE15,1906.

"wmremwk 54*- noenlroz Wit mono ALBERTJ. LOGAN, OF CLEARFIELD, PENNSYLVANIA.

NLlT- LOCK.

Specification of Letters Patent.

Patented June 25, 1907.

Application filed June 15,1906. Serial No. 321,919.

To all whom it may concern:

Be it known that I, ALBERT J. LOGAN, a

'citiae'n of the United States, residing at Ole arfield, 1n the county of Clearfield and State of Pennsylvania, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

My invention relates to an improvement in nut locks and the primary obj ectof the invention is to provide a lock which will be simple, durable and inexpensive while efliciently erforming the functions required of an artic e of this character.

lVith these objects in view, my invention consists in certain-novel features of construction and combinations of parts which will be hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a view in which the nut lock is shown applied to a crank shaft, portions being broken away and in section. Fig. 2 is a view in perspective "showing the nut lock in position. Fig. 3 is a sectional view. one form of lock. Fig. 5 illustrates a slightly modified form of lock. v

A, represents an angular and preferabl octagonal formation on the bolt as in Fig. 3 or it may be on a wrist pin as in Fig. 1, the idea being that this angular or octagonal portion A shall not greatly lessen the diameter of the bolt or wrist pin and it may be formed by removing a portion of the belt or wrist pin I adjacent to the serewrthreads.

B, is the nut lock, two forms of which are illustrated in Figs. 4 and 5, respectively, they being provided with a central orifice 1, of angular form preferably octagonal to correspond with the formation on the bolt or Wrist pin which this orifice is adapted to receive and fit whereby to prevent its turning thereon. While the thickness of the nut lock B may vary, indefinitely, it is designed to be of less thickness than the length of the angular portion of the bolt or wrist pin so as to admit of the nut being screwed down tight.

The nut is indicated by the letter O and in the preferred form as shown in Figs. 1 and 2, this nut is provided with a recess 2 adapted to span the angular portion A of the bolt or Wrist pin so as to allow the nut to turn freely bolt or pin.

Fig. 4 is a view of around said angular portion while the threads are turning upon the bolt or pin.

The nut may be turned on tight or loose as desired after being screwed home the projecting tongues 4, 4, on the ends of the nut lock B are bent up against the side of the nut as shown in Figs. 1, 2, and 3, thus holding it against turning, the nut lock itself being similarly held by the angular portion A as explainedwhich the orifice .1, of the nut lock receives and fits. In this way, it is not necessary that the nut should be screwed down tight so long as the nut lock maintainsits position upon the angular formation A of the Of course, in the great majority of cases, however, it is desirable that the nut should be screwed tightly in place and when so screwed it forces the nut lock down against the bolt or member, it being free to slide upon the angular portion, which latter should be shown slightly rounded as at 5 as this pre- -vents too sharp an angle in the nut look when bent. This is particularly desirable where the parts are large and the nut' lock corresptmdingly thick, and avoids the danger of the latter being broken in bending.

In this way, I provide a very simple and efficientmeans of locking nuts, and a dev1ce which may be made easily and cheaply and applied or removed without difiiculty or waste of time.

Slight changes might be resorted to in the form and arrangement of the several parts described without departure from the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth, but

Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is 2-- A nutlock comprising a rounded or cylindrical bolt having a head at one end and a thread at the other and provided with an angular formation of limited extent at the end of the bolt immediately adjacent to the thread, a locking plate having an orifice of correspondingshape adapted to fit thisangu- In testimony whereof I have igneft my lar fcrrnation whereby 1t 15 prevent-ed. from name to this specification in the presence of to turning thereon, and a nut adapted to screw two subscribing WitneSSOs.

on the threads and poitions of the lock ALBERT J. LOU It adapted to be bent against the side 01' sides of 'che nut, the threaded bore of the nut en- Witnesses: lerged at the inner end to afi'ord clearance NELL M. STEPHENS,

for the angular formation on the bolt. LENO WM. EDWARDS. 

